Investors upset that company failed to inform them might need to take out even more debt.

Datacenters don't come cheap. Oracle debt bond holders are suing the tech giant, because they say that the company didn't tell them it would need to borrow even more money after its original sale, making their purchases less valuable.

In September, Oracle raised $18 billion in debt bonds to help fund massive datacenter investments aimed at meeting surging demand from AI model builders and enterprise customers.

The Securities and Exchange Commission filings said Big Red sold the bonds to raise cash for a number of activities, including capital expenditures. The move followed Oracle's first-quarter results earlier in the month, when it stunned the stock market by announcing it had bagged cloud contracts, signed but not yet paid for, worth $455 billion. This reportedly included a $300 billion deal with OpenAI.

However, weeks later, media reports said Oracle planned to launch another $38 billion debt offering to fund ...